Professional membership is open to professionals primarily involved in the provision of services, research, education or public policy in an area related to trauma and dissociation. All members must act in accordance with the Code of Conduct. Members who are mental health or health care providers must be either licensed professionals in good standing with their professional board or mental health professionals who are practicing under the supervision of a licensed professional or qualified with the accepted legal or cultural standards for conducting clinical practice in their locale. Professional members are required to provide their licensing details on an annual basis when renewing their ISSTD membership. For membership of non-clinical professionals, good standing must be demonstrable by their relevant professional board, employer or employing institution.